Vapor Intrusion Regulatory Guidance

Vapor Intrusion Guidance by state, all in one place. Last updated 4/1/2021. 

StateAgencyGuidance Documentation & Resources
ALAlabama VI ProgramDEM VI Guidance
Guidance Page
ARBCA Guidance Manual 2017
Former ARBCA Guidance Manual 2008
AKAlaska VI ProgramDEC Vapor Intrusion Website
Guidance and Forms
Vapor Intrusion Guidance PDF
Information About Exposure to TCE
US EPA Region TCE Memo
Vapor Intrusion Fact Sheet
Sampling Assessment of Vapor Intrusion
Vapor Intrusion Pathway Guideline
AZArizona VI ProgramArizona’s DEQ Soil Vapor Guidance
Substantive Policy Pages
Site Investigation Guidance Manual PDF
Soil Vapor Sampling Guidance PDF
ARArkansas VI ProgramADEQ’s Hazardous Waste Division
CACalifornia VI ProgramVapor Intrusion Page
Site Redevelopment with Vapor Intrusion Threats
Site Cleanup Program Page
Environmental Screening Levels (ESL)
Environmental Screening Levels User Guide
Environmental Screening Levels Summary Tables
TCE Vapor Intrusion Framework
HHRA Update 2019
California Schoolscreen Guidance
California EPA Toxicity Criteria Database
California Johnson & Ettinger Model
San Diego County Vapor Risk Assessment
San Diego County Instructions to Vapor Risk 2000
California DTSC Active Soil Gas Investigation
California Air Resources Board Ambient Air Concentrations
Correcting JE Model for Soil Temperature

DTSC Vapor Intrusion Website
DTSC Vapor Intrusion Guidance
DTSC Human Health Risk (HERO)
DTSC Vapor Mitigation Advisory Guidance
DTSC Soil Gas Investigation Guidance
Waterboard Screening Levels
Waterboard Vapor Intrusion Assessment TCE
VI Public Participation Advisory PDF
HHRA and VI Risk Assessment Tool Page
COColorado VI ProgramVapor Intrusion Guidance Document
2016 Air Screening Concentration Table
Guidance Page
Indoor Air Guidance
Dry Cleaner Guidance
Screening Value Page
Vapor Intrusion Guidance PDF
Petroleum Program Guidance Recommendations for Vapor Intrusion
Petroleum Hydrocarbon Vapor Intrusion Guidance Document
Colorado Soil Evaluation Values
CTConnecticut VI ProgramDEEP TCE Indoor Air and Vapor Intrusion Guidance
DPH Document on Vapor Intrusion of VOCs
Remediation Standard Regulation Presentation
Remediation Standard Regulation PDF
Remediation Guidance Documents
Site Characterization Guidance Document
Significant Environmental Hazard Program Page
Trichloroethylene (TCE) Developmental Risks
Toxicology and Risk Assessment Page
TCE in the Workplace Fact Sheet
Vapor Intrusion Technical Brief
DEDelaware IV ProgramDNREC Vapor Intrusion Guidance
Policy, Guidance and SOP Page
Screening Level Table
Risk Assessment Guidance
Active Soil Gas SOP
Sub-Slab Air SOP
DCDistrict of Columbia VI Program
FLFlorida VI ProgramFDEP Vapor Intrusion Guidance
Remediation Guidance
Procedures & Guidance Documents
Petroleum Restoration Program
Indoor Vapor Intrusion
Waste Clean Up Program
GAGeorgia VI ProgramEPD Vapor Intrusion Guidance
Hazardous Site Response Act Guidance
Risk Reduction Standards
Georgia Rules on Hazardous Site Response and Risk Reduction Standards
HIHawaii VI ProgramDOH Vapor Intrusion Guidance
Technical Guidance Manual
Vapor Intrusion Guidance
Hawaii Soil Vapor and Indoor Air Sampling Guide
Hawaii Evaluation of Environmental Hazards Action Level Tables
IDIdaho VI Program
ILIllinois VI ProgramVapor Intrusion Guidance Page
Vapor Intrusion Fact Sheet
Indoor Air Quality and Healthy Homes
Procedural and Environmental Rules
Overview of Indoor Inhalation Amendments
TACO Presentation Page
TACO and Vapor Intrusion
TACO Fact Sheets
TACO Resources
TACO Objectives
INIndiana VI ProgramVapor Intrusion Guidance PDF
Technical Guidance for Cleanups
Risk Evaluation Guidance
Site Characterization and Sampling Guidance
Remediation Closure Guide
Vapor Remedy Selection and Implementation
Vapor Mitigation Systems
Vapor Intrusion Investigation
IDEM Screening and Closure Level Tables
Screening Level Tables
Attenuation Factors
Vapor Intrusion and TCE in the State of Indiana
Johnson & Ettinger Model
Indiana Office of Air Quality Ambient Air Concentrations
IAIowa VI ProgramLUST Site Assessment
Underground Storage Tanks
Rules for Remedial Action
KSKansas VI ProgramKDHE Vapor Intrusion Website
RSK Presentation Page
RSK Manual PDF
KYKentucky VI ProgramVapor Intrusion
Vapor Intrusion Assessment
Vapor Intrusion Building Assessment
Vapor Intrusion Assessment Checklist
Vapor Intrusion Building Assessment Checklist
Release Response and Initial Abatement Requirements
DWM Annual Report 2011
Division of Waste Management
LALouisiana VI ProgramRisk Evaluation/Corrective Action Program(RECAP)
RECAP 2019
RECAP Frequently Asked Questions
RECAP Frequently Requested Files
Soil Gas Sampling
Recommended Approach for VI Evaluation Using Soil Gas Sampling
MEMaine VI ProgramR&WM Vapor Intrusion Guidance
Vapor Intrusion Evaluation Guide
Remediation Program Guidance
Guidance for the Investigation and Clean-up of Hazardous Substance Sites
Maine Remedial Action Guidelines (RAGs)
Maine RAG Tables
Screening Level Tables
Vapor Intrusion Study of Petroleum Sites
Petroleum Compounds in Indoor Air
Remediation Guidelines for Petroleum Contaminated Sites
Indoor Air Sampling Field Sheet
MDMaryland VI ProgramMDE Vapor Intrusion Guidance
Technical Guidance for Vapor Intrusion
Citizen’s Guide to Vapor Intrusion
Toxic Air Pollutant Regulations
Land Restoration Program News and Resources
Land Restoration Program Fact Sheets
Voluntary Clean Up Program
Voluntary Clean Up Program Phase II
Voluntary Clean Up Program Response Action Plans
MAMassachusetts VI ProgramVapor Intrusion Guidance
Evaluation of Vapor Intrusion Into Buildings
Trichloroethylene Toxicity Information
Mass DEP TCE Vapor Intrusion Evaluation at Closed Sites
Indoor Air Report
Typical Indoor Air Concentrations
Indoor Air Sampling and Evaluation Guide
Vapor Intrusion and Indoor Air Contamination from Waste Sites
Indoor Air Guidance Project
Site Cleanup Regulations, Policies, and Forms
Site Clean Up Fact Sheet
Waste Site Clean Up Laws and Regulations
Site Clean Up and Facility Assessment
US EPA Recommendations Regarding Remediation
Massachusetts Contingency Plan
Massachusetts Contingency Plan Numerical Standards
Guidelines for Sub-slab Depressurization Systems
Ground Water Discharge Permit Program
Chemical Research and Standards
MIMichigan VI ProgramMDEQ Vapor Intrusion Website
MDEQ Indoor Air Guidance Page
Vapor Intrusion Pathway Guidance
Indoor Air Interim Action Screening Levels
Recommendations for Interim Action Screening Levels
Michigan Target Detection Limits
Michigan Risk Based Screening Levels for Groundwater
Michigan Risk Based Screening Levels for Soil
Clean Up Criteria and Screening Levels Development and Application
MNMinnesota VI ProgramPCA Vapor Intrusion Website
Vapor Intrusion Common Questions
Vapor Intrusion Health Fact Sheet
Vapor Intrusion Pathway Reference Documents
Vapor Intrusion Screening Values
Background Information on Intrusion Screening Values
Vapor Intrusion Management Practices
Management Practices for Vapor Investigation
Vapor Intrusion Mitigation
Risk Based Guidance for Vapor Intrusion Pathway
Vapor Intrusion Guidance from Petroleum Remediation Program
Petroleum Remediation Program Page
Topics Related to Hazardous Substances
Minnesota Clean Indoor Air Act (MCIAA)
Health Risk Values for Air
TCE and Your Health
TCE in Air
PCE and Your Health
Air Guidance Value Tables
TCE Air Guidance Value Tables
Risk Based Site Evaluation Guidance
Clean Up Guidance
MDH Risk Assessment Guidance
General Mills: General Information and Background
MSMississippi VI ProgramVapor Intrusion Guidance
Brownfield Groundwater Assessment and Remediation
Brownfield Technical Resources
Risk Evaluation Procedures for Clean Up and Redevelopment of Brownfield Sites
MOMissouri VI ProgramVapor Intrusion Guidance
Vapor Intrusion Fact Sheets
Vapor Intrusion and Evaluation of the Indoor Inhalation Pathways
Reports, Fact Sheets and Consultations
Environmental Factors
Missouri Risk-Based Corrective Action (MRBCA)
Missouri Risk-Based Corrective Action (MRBCA) Guidance PDF
MRBCA Process for Petroleum Storage Tanks
MRBCA Process for Petroleum Storage Tanks PDF
MRBCA Soil Gas Sampling Protocol
Measurement of Soil Vapor Levels
Risk Based Target Levels
MTMontana VI ProgramMDEQ Vapor Intrusion Website
Montana Vapor Intrusion Guide PDF
Vapor Intrusion Frequently Asked Questions
Soil Vapor Intrusion Frequently Asked Questions
Typical Indoor Air Concentrations
Air-Phase Petroleum Hydrocarbon Vapor Intrusion Calculator
State Superfund Resources
NENebraska VI ProgramNebraska Voluntary Clean Up Program
Risk Based Corrective Action (RBCA) At Petroleum Site
NVNevada VI ProgramDEP Vapor Intrusion Guidance
Site Cleanup Guidance
PCE Releases
NHNew Hampshire VI Program
NJNew Jersey VI ProgramDEP Vapor Intrusion Website
Vapor Intrusion Technical Guidance
Vapor Intrusion Guidance Update
Vapor Intrusion Screening Levels
Screening Levels Update
Vapor Intrusion Seminar Slides
TCE Health Risks and Fact Sheet
Hazardous Waste Sites
Background Levels of Volatile Organic Chemicals In Home
Requirement for Air Analyses
New Jersey Johnson and Ettinger Spreadsheets
NMNew Mexico VI ProgramHazardous Waste Bureau
Hazardous Waste Guidance
Risk Assessment Guidance for Site Investigations and Remediation
NYNew York VI ProgramDOH Vapor Intrusion Website
Vapor Intrusion Guidance
Vapor Intrusion PDF
Vapor Intrusion Fact Sheets
Vapor Intrusion Policy PDF
Soil Vapor/Indoor Air Matrix
Soil Vapor Intrusion Updates
Guidance for Evaluating Soil Vapor Intrusion
Endicott Soil Vapor Project
Volatile Organics in Air of Fuel Oil Heated Homes
Background Volatile Organic Chemicals in Air
Remediation Guidance and Policy
New York Soil Clean Up Guidance
TCE Fact Sheet
TCE in Indoor and Outdoor Air
Fact Sheet: PERC in Indoor and Outdoor Air
Fact Sheet: PERC in Indoor and Outdoor Air 2
NCNorth Carolina VI ProgramVapor Intrusion Guidance
Vapor Intrusion Guidance PDF
Vapor Intrusion Evaluation Guidance
Screening Levels Guidance
Residential Vapor Intrusion Screening Levels
Non-Residential Vapor Intrusion Screening Levels
Waste Management Program Guidance
Inactive Hazardous Sites Guidance
NDNorth Dakota VI ProgramDivision of Air Quality
Division of Waste Management
OHOhio VI ProgramOhio’s EPA Vapor Intrusion Guidance
Vapor Intrusion Guidance
Vapor Intrusion Specific Updates
Additional Vapor Intrusion Resources
Field Standard Operating Procedures for Vapor Intrusion
TCE Action Levels
OKOklahoma VI ProgramORBCA Guidance
OCC Guidance Page
Vapor Intrusion Fact Sheets
Waste Management
Voluntary Clean Up Program
Clean Up and Redevelopment
OROregon VI ProgramOregon’s DEQ Vapor Intrusion Guidance
Vapor Intrusion Policy and Guidance
Risk-Based Guidance
Risk Based Concentrations for Individual Chemicals
Risk-Based Concentrations for Individual Chemicals Spreadsheet
Hot Spot Concentrations
TCE Toxicity Values
Screening Model for Volatilization from Soil to Indoor Air
PAPennsylvania VI ProgramVapor Intrusion Guidance
Vapor Intrusion Guidance Training
Guidance and Technical Tools Page
Land Recycling Program
Land Recycling Program Technical Guidance
DEP eLibrary
RIRhode Island VI ProgramVapor Intrusion Fact Sheets
Evaluating Vapor Intrusion at Proposed School Sites
Rhode Island Regulations
Remediation Regulations
Office of Waste Management
SCSouth Carolina VI ProgramRisk Based Corrective Action for Petroleum Releases
Hazardous Waste
SDSouth Dakota VI ProgramPetroleum Assessment and Cleanup Handbook
South Dakota DENR Look Up Tables
TNTennessee VI ProgramDOH Vapor Intrusion Website
Vapor Intrusion Laws, Rules and Guidance
Underground Storage Tanks Forms and Guidance
TXTexas VI ProgramVapor Intrusion Considerations
Vapor Intrusion Regulation in Texas
Texas Risk Reduction Program (TRRP)
Texas Risk Reduction Program Guidance and Forms
TRRP Protective Concentration Levels
Tier 1 PCL Tables
UTUtah VI Program
VTVermont VI ProgramDEC Vapor Intrusion Presentation
Vapor Intrusion Background
Rules, Guidance, Documents and Procedures
Contaminated Properties Rule
Investigation and Remediation of Contaminated Properties
VAVirginia VI ProgramVapor Intrusion Master Table
WAWashington VI ProgramVapor Intrusion Guidance
Vapor Intrusion Frequently Asked Questions
Vapor Work Group
Vapor Intrusion Guidance Table B-1
Vapor Intrusion 2019 Changes to Screening Levels and Clean Up
Evaluating Soil Vapor
Petroleum Vapor Intrusion (PVI)
Petroleum Vapor Intrusion Updated Screening Levels and Assessing PVI Threats
Toxic Clean Up Program
Toxic Clean Up Program Listening Session
Overview Guidance for Evaluating Soil Vapor Intrusion
Washington State Department of Health Vapor Intrusion Page
Washington Developing Air Clean Up Standards
WVWest Virginia VI ProgramVoluntary Remediation Program
Voluntary Remediation and Redevelopment Act (VRRA)
Risk Assessment of Petroleum Releases
WIWisconsin VI ProgramVapor Intrusion Guidance Page
Vapor Intrusion PDF
Vapor Intrusion and Indoor Air
Vapor Intrusion Facts Sheets
Vapor Intrusion Fact Sheet for Property Owners
Vapor Intrusion Resources for Environmental Professionals
Guidance for Documenting the Investigation of Utility Corridors
Sub-slab Vapor Sampling Procedures
Screening Levels Tables
History of Changes
WYWyoming VI ProgramVoluntary Remediation Program
Voluntary Remediation Program Fact Sheets

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